Silk screen stencil frame



Jan. 9, 1951 05 {PASQUALE 2,537,306

SILK SCREEN STENCIL FRAME Filed Aug. 11, 1948 I I -INVENTOR. Q/mcha/el00 Wank BY 7 ATTORNEYS Patented Jan. 9, 1951' SILK SCREEN STENCIL FRAMEMichael De Pasquale, Brooklyn, N. Y., assignor of one-haif to BernardKushner, Great Neck, N. Y.

ApplicationAllgust 11, 1948, Serial No. 43,559

This invention relates to screen stencil frames and, more especially, toframes for silk screens and the like, such as are employed in makingprinted designs and decorations on lamp shades, piece goods, and a greatvariety of other articles.

A primary object of the present inyention is the provision of a frame ormounting for stencil screens which greatly facilitates attachment andtensioning of the screen and which prevents wrinkling and puckering ofthe screen by eliminating the possibilit of warping of the frame, Thisobject is achieved by providing a channelshaped metal frame, preferablyrectangular in shape, having inserts of wood or other suitable materialreceived within and frictionall retained by the channels defined by saidframe. The screen is attached to the frame by forming marginal, U-shapedbights around its edges and securing the free ends of the bights to thewood in serts by means of staplesor in any other suitable manner, theremaining portion of the bights extending around the side and bottom ofthe channel-shaped metal frame. The disposition of the Wooden insertswithin the metal frame prevents warping and consequently eliminateswrinkling and buckling of the screen. The presence of the marginal,U-shaped bights in the screen minimiz'es sagging and facilitatestensioning of the screen.

Another object of the invention is the provision of a frame of thecharacter indicated which allows detachment and convenient storage ofthe screen without injury. By thepractice of the invention a largenumber of screens may be handled and stored in a minimum of spacewithout deleterious effect and without requiring detachment of eachscreen from its supporting frame, the entire unit being mountable uponand readily dismountable from a mainframe support.

The foregoing objects as well as additional objects and advantages ofthe invention will be readily apparent in the course of the followingdetailed description taken in connection with the accompanying drawingwhich illustrates preferred embodiments, and wherein:

Fig. 1 is a sectional View taken on line l-i of Fig. 2 showing a screenmounted on a frame embodying the features of the invention, the screenand frame sub-unit being secured to a main supporting frame;

. Fig. 2 is a top plan view of the assembly of Fi 1;

Fig. 3 is an enlarged sectional detail illustrating the construction ofthe channel-shaped frame member and insert and the manner of attachmentof the stencil screen; and

6 Claims. (Cl. 101127.1)

Fig. 4 is a view similar to Fig. 3 illustrating a modified'form' offrame member and insert.'

Referring now to the drawing in greater de' tail, [9 designates achannel-shaped metal frame member which is preferably rectangular inshape having sides H and ends l2. fiberboard or any other suitablematerial are received within the sides II and ends l2 of frame it andserve as a supporting means for the screen stencil Hi. Screen 14 isattached to frame IE) by forming marginal, U-shaped bights therein andby extending said bights around the sides 'H and ends 12 of the frame,the free ends [5 of said bights being secured to the inserts it by meansof staples it or in any other suitable manner. By providing the screenI4 with marginal, U- shaped bights proper tensioning of the screen isassured while minimizing any tendency of the screen to sag or distort.If desired,the upper edges of channel-shaped frame If! may be turnedinwardly to provide lips I? securely retaining inserts i3.

The drawings illustrate the frame Iii, carrying the screen it secured asa sub-unit to a main frame or support l8 which may be made of wood ormetal and which is preferably of considerably greater depth than frame10. If the sub-unit wereto' be permanently fixed to main frame 18 thelarge bulk of the assembly would require'exces's'ive storage space.Therefore frame lfi carrying screen I l is detachably mounted on mainframe l8 by means of bolts [9 or any other suitable fastening means.Where bolts are employed the frame Iii is provided with suitablydisposed apertures and the inserts it are provided withcountersunk'recesses' 20 to prevent projection of bolts 19 beyond thebottom surface of frame I6. As shown in Figs. 1 and 2, nuts 2! may beemployed for fastening said bolts in position and clamping the sub-unitcomprising frame Iii and screen Hito the main frame It.

In order to prevent the accumulation of ink between main frame l8 andchannel frame 10, a sealing gasket 22 of rubber or other suitablematerial is interposed between said frames. This is of particularimportance where multicolor impressions are to be made using a pluralitof screens l4 secured in turn to the main frame l8. The presence ofgasket 22 prevents ink from lodging between the main frame and thescreen supporting frame.

Fig. 4 illustrates a modified form of stencil frame 25 which ischannel-shaped and which has its bottom surface formed as a downwardlyopening recess or channel 26. This formation serves not alone tostrengthen the frame appreciably Inserts 13 of wood,

but simultaneously serves to provide countersinking for the fasteningbolts 27 which secure the stencil frame to the main frame IS. Theinserts 28 are of course correspondingly shaped to fit within the sidesand ends of frame 25 and the top edges of said frame are preferablyinwardly turned to provide lips 29 serving to securely retain saidinserts.

The construction and arrangement of the present invention provides amounting frame to which a stencil screen may be readily attached andupon which it may be easily tensioned to form a sub-unit which may bedetachably secured to a main supporting frame. The disposition .of theinserts IE or 28 within the rigid metal frame 10 or 25 respectivelyprevents warping of the inserts and consequently eliminates wrinklingand dis tortion of the stencil screen I4. Thefeature of detachability ofthe sub-unit, comprising the mounting frame and stencil screen, from themain frame allows individual stencil screens be conveniently stored insmall compass thereby conserving storage space.

Since certain modifications may be made in the device of the inventionwithout departing from the scope thereof, it is intended that all mattercontained in the foregoing description and shown in the accompanyingdrawing ,be interpreted merely as illustrative and not in a limiti-ngsense.

What is claimed is:

1. A stencil-screen printing device comprising a main frame and amounting frame, said mounting frame comprising an outer, channel-shaped,rigid member and relatively yieldabie insert members retained withinsaid outer member. said mounting frame having a stencil screen stretchedacross the lower surface thereof, the ends of said stencil screenextending around the outer side and top of said frame and being fixedlysecured to said insert members, said main frame and mounting framehaving cooperating means for removably fastening said mounting frame tothe bottom of said main frame in regis tering position therewith.

2. A stencil-screen printing device comprising a main frame and amounting frame having the same plansize, and shape as said main frame,said mounting frame comprising an outer, channel-shaped, rigid memberwhich is open at the top thereof, and relatively yieldable insertmembers retained within said outer member, said mounting frame having astencil screen stretched across the lower surface thereof, the ends ofsaid stencil screen extending around the outer sides and top of saidframe to provide marginal 'U- shaped bights and being fixedly secured tosaid insert members, said main frame and mounting frame havingcooperating means for removably fastening said mounting frame flatagainst the bottom of said main frame in registering position therewith.

3. A stencil screen printing device according to claim 2 in which thetop edges of the channel- :shaped member are inwardly turned to providelips preventing removal of the insert members.

i. A stencil-screen printing device comprising a main frame and amounting frame having the same planlsize and shape as said main frame,said mounting frame comprising an outer, channel-shaped rigid memberwhich is open at the top thereof, and relatively yieldable insertmemibers retained within said outer member, said mounting frame having astencil screen stretched across the lower surface thereof, the ends ofsaid stencil screen extending around the outer sides and top of saidframe to define marginal U- shaped big-hts and being fixedly secured tosaid insert members, said main frame being secured to said mountingframe by a plurality of bolts each of which extends through said mainframe and said mounting frame, the ends of said bolts being countersunkin the' bottom of said mount ing frame.

5. A stencil-screen printing device according to claim 4 in which thebottom surfaces of said mounting frame are provided with centralIongitudina-l channels in which theends of said bolts are countersunk;

6. A stencil-screen printing device according to claim 4 in which agasket member is interposed between said mounting frame and said mainframe, said gasket member being rigidly held in position by theclamping" force of said bolts.

MICHAEL DE PASQUALE.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date '1,489,439 Banzett Jan. 8, 1924'1,495,037 Patterson May 20, 1-924 1,828,771 FIoc-khart Oct. '27, 1-931FOREIGN PATENTS Number Country Date 14,397 Australia July 12, 1923349,411 Italy -f July 15, 1937

